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https://issues.apache.org/jira/browse/HAWQ-1077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Guo resolved HAWQ-1077.
----------------------------
Resolution: Fixed
> Table insert hangs due to stack overwrite which is caused by a bug in ao
> snappy code
> ------------------------------------------------------------------------------------
>
> Key: HAWQ-1077
> URL: https://issues.apache.org/jira/browse/HAWQ-1077
> Project: Apache HAWQ
> Issue Type: Bug
> Reporter: Paul Guo
> Assignee: Paul Guo
> Fix For: 2.0.1.0-incubating
>
>
> It hang when try to insert large data into append-only table with
> compression. To be specific, the QE process spins at compression phase. Per
> RCA, there is stack overwritten in append-only table ith snappy compression.
> The call stack is as following:
> {noformat}
> #0 0x00000000008607c4 in gp_trycompress_new (sourceData=0x2eec5b0
> "\340\352\356\002", sourceLen=0,
> compressedBuffer=0xa2b3b4 "\311\303UH\211\345H\211}\370H\213E\370\307@<",
> compressedBufferWithOverrrunLen=38253,
> maxCompressedLen=32767, compressedLen=0xf8c800a29636, compressLevel=0,
> compressor=0x5d9cdf <snappy_compress_internal>,
> compressionState=0x2eee690) at gp_compress.c:56
> #1 0x0000000000a2a1c6 in AppendOnlyStorageWrite_CompressAppend
> (storageWrite=0x2eec558,
> sourceData=0x33efa68 "ata value for text data typelarge data value for
> text data typelarge data value for text data typelarge data value for text
> data typelarge data value for text data typelarge data value for text data
> t"..., sourceLen=0,
> executorBlockKind=2, itemCount=0, compressedLen=0x7fffa7804f74,
> bufferLen=0x7fffa7804f70) at cdbappendonlystoragewrite.c:1255
> #2 0x0000000000a2ae1b in AppendOnlyStorageWrite_Content
> (storageWrite=0x2eec558, content=0x33e7a70 "\242\241:\200\351\003",
> contentLen=3842464, executorBlockKind=2, rowCount=1) at
> cdbappendonlystoragewrite.c:1868
> #3 0x000000000056b805 in appendonly_insert (aoInsertDesc=0x2eec460,
> instup=0x33e7a70, tupleOid=0x7fffa7805094,
> aoTupleId=0x7fffa7805080) at appendonlyam.c:2030
> {noformat}
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